8042061921 has 8 divisors (see below), whose sum is σ = 10723980384. Its totient is φ = 5360759040.

The previous prime is 8042061919. The next prime is 8042061931. The reversal of 8042061921 is 1291602408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8042061921 - 2¹ = 8042061919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8042061931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122496 + ... + 176321.

It is an arithmetic number, because the mean of its divisors is an integer number (1340497548).

Almost surely, 2^8042061921 is an apocalyptic number.

It is an amenable number.

8042061921 is a deficient number, since it is larger than the sum of its proper divisors (2681918463).

8042061921 is a wasteful number, since it uses less digits than its factorization.

8042061921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307791.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 8042061921 is about 89677.5441289513. The cubic root of 8042061921 is about 2003.4990348908.

The spelling of 8042061921 in words is "eight billion, forty-two million, sixty-one thousand, nine hundred twenty-one".